NefDecoder::decodeRawInternal(): don't stack-allocate NikonDecompressor.
NefDecoder::decodeRawInternal(): don't stack-allocate NikonDecompressor.

Takes almost 140Kb.

klauspost/rawspeed,LebedevRI/rawspeed,darktable-org/rawspeed,anarsoul/rawspeed,LebedevRI/rawspeed,anarsoul/rawspeed,LebedevRI/rawspeed,darktable-org/rawspeed,darktable-org/rawspeed,darktable-org/rawspeed,klauspost/rawspeed,anarsoul/rawspeed,darktable-org/rawspeed,LebedevRI/rawspeed,LebedevRI/rawspeed